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<a href="duye__shm_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*************************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">**  </span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">* @copyright (c) 2013-2100, ChengDu Duyer Technology Co., LTD. All Right Reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">*************************************************************************************/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;sys/mman.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;sys/types.h&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;fcntl.h&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;unistd.h&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="duye__type_8h.html">duye_type.h</a>&gt;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">namespace </span>duye {</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    </div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">typedef</span> <span class="keyword">enum</span> { </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    OPEN_SHM_FAILED = -2,</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    MUNMAP_SHM_FAILED = -3,</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    MMAP_SHM_FAILED = -4,</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    SYNC_SHM_FAILED = -5,</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    WRITE_SHM_PARA_FAILED = -6,</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    READ_SHM_PARA_FAILED = -7,</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    SHM_NO_INIT = -8,</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    SHM_PATH_EMPTY = -9</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;} ShmErrorCode;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="code" href="classduye_1_1_shm.html">   71</a></span>&#160;<span class="keyword">class </span><a class="code" href="classduye_1_1_shm.html" title="shared memory for ipc">Shm</a> {</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <a class="code" href="classduye_1_1_shm.html" title="shared memory for ipc">Shm</a>();    </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    ~<a class="code" href="classduye_1_1_shm.html" title="shared memory for ipc">Shm</a>();</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    <span class="keywordtype">bool</span> <a class="code" href="classduye_1_1_shm.html#a2a476f58df26f5740d791002906eeb37" title="constructor">init</a>(<span class="keyword">const</span> int8* shmPath, <span class="keyword">const</span> uint64 shmSize);</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <span class="keyword">const</span> int8* <a class="code" href="classduye_1_1_shm.html#ac20c16b55c21861bbde59e0961ccb96d" title="get shm path">path</a>() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    uint64 <a class="code" href="classduye_1_1_shm.html#a4b3279f66ae42910d650eef3cb25f4a9" title="get shm size">size</a>() <span class="keyword">const</span>;    </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    <span class="keywordtype">bool</span> <a class="code" href="classduye_1_1_shm.html#a15f7a79aa99263339f9d94846fd36ddf" title="sync the shm">sync</a>();</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <span class="keywordtype">bool</span> <a class="code" href="classduye_1_1_shm.html#a7094da8b2ea2a6116375945f2c43c256" title="write data to shm">write</a>(<span class="keyword">const</span> uint32 offset, <span class="keyword">const</span> int8* data, <span class="keyword">const</span> uint32 length);</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <span class="keywordtype">bool</span> <a class="code" href="classduye_1_1_shm.html#a7c14682004721b9f76964fd88204e3a4" title="read data from shm">read</a>(<span class="keyword">const</span> uint32 offset, int8* buffer, <span class="keyword">const</span> uint32 size);</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordtype">bool</span> uninit();</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    int8     m_shmPath[<a class="code" href="duye__type_8h.html#ae688d728e1acdfe5988c7db45d6f0166" title="limits number for path max length">PATH_MAX</a>];</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    uint64   m_shmSize; </div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <span class="keywordtype">void</span>*    m_shmAddr;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="keywordtype">bool</span>     m_initFlags;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;};</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;}</div>
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